“I’m not a racist person. But if four black men bashed a white man, they would be in jail awaiting trial,” she said.

“The police are making out that we’re going to be violent, but it will be a peaceful get-together.

“We want answers and we want somebody made accountable for what happened to Peter.”

Police have not arrested or charged any of the men involved in the bashing, despite knowing their identities.

“They (police) were told what had happened by us and witnesses,” Mrs Duncan said.

“Peter told them what happened to him before he collapsed.

“Someone should have been charged there and then.”

Mrs Duncan said Aboriginal activists Lyall Munro and Stephen Hagan would be at the protest.

While the pathology report is not due back until next month, Mrs Duncan said that was not the issue.

“I know he had a heart attack, but it’s what led up to it that caused what happened to him.

“My life is gone. My kids’ father is gone. There is an ache inside me that hurts all day.”

Toowoomba District Police spokesman Detective Inspector Brett Schafferius said he would “not speculate” when asked why the attackers have not been charged with, at least, assault.

“The issue of the cause of death is pivotal and central to the entire investigation,” he said.

“I’m not going to speculate on any charges being laid at this stage.

“The pathology report will have a definite bearing on the way this investigation progresses.

“We will continue liaison with the Duncan family to ensure that they are kept up to date with the progress of the investigation.”

Mrs Duncan was initially considering a justice march from Chamberlain Street to the police station, but instead opted for a meeting in a public place after being warned they could be charged with affray.

The protest will be held in Queens Park at 10am on Friday, February 26.

January 19: Peter “Bo” Duncan collapses and dies less than one hour after being bashed in North Toowoomba.

January 20: Police arrest and charge a man with wilful damage of two homes and a vehicle belonging to the attackers’ family in Chamberlain Street.

January 21: A post-mortem examination is conducted on the body of Mr Duncan.

January 29: Mr Duncan is farewelled by family and friends at service in Goondiwindi. He is buried at Toomelah.

January 30: Police called in the early hours of the morning to break-up several fights after the family went to Boggabilla following the funeral.